Latch and lock for sliding door



Feb. 2, 1960 J. c. LABRIE LATCH AND Loox FOR sLmNG Doos Feb. 2, 1960 J.c. LABRIE 2,923,145

LATCH AND Locx FOR sLIDiNG DooR Filed Dec. 14, 1956 3 Sheets-Sheet 2Joseph C. abr/'e IN VEN TOR.

MMWMW Feb. 2, 1960 Filed Dec. 14, 1956 J. C. LABRIE LATCH AND LOCK FORSLIDING DOOR 5 Sheets-Sheet 3 HHIHIIIHI Joseph C.

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abr/'e IN VEN TOR.

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Units@ Patent i LATCH AND LOCK FOR SLIDING DOOR Joseph C. Labrie, Miami,Fla.

Application December 14, 1956, Serial No. 628,317

` Claims. (Cl. 70-97) This invention relates to hardware for a slidingdoor and more particularly to a latch which is of unique construction,enabling the use of a wafer or pin tumbler lock within the latch and yetremain within the confines of the thickness of an ordinary sliding door.

The nature of this lock which makes it so important is the unique designto match the design of all the popular borings of tubular locks. Thecylinder of this lock is interchangeable on any of the tubular locks onthe market today, for instance, Schlage, Yale, Corbin, Russell- Erwin,Sargent, Arrow Lock, National Lock, Quik-Set, West Lock brands and manyothers. This unit can be installed on any of those jobs as mentionedabove and mastered to their same ve pin tumbler locks for one andthree-eighths inch doors. Also, this lock can be installed in any hotel,motel, apartment house or public building and master keyed to their ownchoosing for one and three-fourths inch doors and six pin tumbler typefor section master and grand master. reversible properly for right handor lett hand doors without turning the key upside down in the matter ofa minute without adding anything.

An object of this invention is to provide a combination latch and pin orWafer tumbler lock which is easily installed in a sliding door withoutmortising or making any special openings other than circular bores orpassages, the purpose being to provide a practical wafer or tumbler typelock controlled latch for a sliding door wherein. the mechanism iscontained entirely within the Hush escutcheons. A further object of theinvention is to provide a novel structural interaction between thevarious parts of a pin or Wafer tumbler lock controlled latch capable oftting within a sliding door and without objectionable protruding doorknobs or the like.

I These together with other objects and advantages which will becomesubsequently apparent reside in the details of construction andoperation as more fully hereinafter described and claimed, referencebeing had to the accompanying drawings forming a part hereof, whereinlike numerals refer to like parts throughout, and in which:

v Figure l is an elevational view of a part of a door which has a lockconstructed in accordance with the invention disposed therein; l

Figure 2 is a view in elevation of the same part of the door in Figure1, but showing the opposite side thereof;

Figure 3 is an elevational view taken on the line 3-3 of Figure l;

Figure 4 is a view taken approximately on the line 4 4 of Figure 1 andshowing the keeper and keeper plate which is adapted to be engaged withthe bolt of the latch and lock in Figure 1;

Figure 5 is a sectional view taken on the line 5-5 of Figure 3 andshowing the bolt in the keeper engaging position;

Figure 6 is a sectional view taken on the line 6-6 of Figure 3;

' Figure 7 is an enlarged sectional view taken on the line This lock isalso back wall 32 of casing 24.

7 7 of Figure 1 and showing the door in the locked position;

Figure 8 is a sectional view taken on the line 8-48 of Figure 7;

Figure 9 is a perspective view of the bolt and means mounting the boltfor pivotal movement in the sliding door;

Figure l0 is an exploded, perspective view showing the rear sides of oneof the escutcheon plates and a plurality of the elements which areassembled as shown in Figuresl 7and 8;

Figure 11 escutcheon, lock casing, wafer or pin tumbler lock,

one of the handles and parts which are rigidly secured to that handle;and

Figure l2 is a perspective view of the keeper and keeper plate which issuggested to be used with the door mounted lock and latch.

In the accompanying drawings there is a sliding doorv 10 whichschematically represents any type of such door; Usually an inside doorof and of ordinary thickness. this type is one and three-eighths inchesthick, while an outside door is generally one and three-fourths inchesIor greater in thickness. The invention provides a means whereby aconventional wafer or tumbler type lock 12 is used to lock bolt 14. Notefrom Figures 7 and 8 that the wafer or pin type tumbler lock 12 is of alength almost equal to the thickness of door 10. It, therefore, is aproblem to operatively arrange such a lock, assuming for the purposes ofdiscussion that the lock 12 is a pin type lock, entirely within thefront and rear surfaces of door 10 and yet have it work properly. Such alock' has inherent advantages which are known in the art and must beused in hotels and other similar places whereas' other types of'lockswill not serve the purpose.

The following description shows how such a lock 12- is capable ofpractical use in a sliding door 10 which has such a small thicknessdimension. Door 10 has a passageway 16 formed in it, as by drilling, andthere isf a bore 1S which opens through an edge of the door and whichregisters with passage 16. The passage and bore' cylindrical lock casing24 by bolts 25 and 26 which pass through holes 27 and 28 in escutcheonplate 22 and which are threaded in sleeves 30 and 31 nxed onto the Thismeans that the lockl easing 24 is inserted in the passage 16 behindescutcheon- 22 and that the other escutcheon 20 is fitted liush againstthe wall 32 of lock casing 24. There are holes 35 and V36 in escutcheon20, with bolts 37 and 38 passing through these holes and through alignedholes 39 and 40 in the back wall 32 of lock casing 24.

Two separate parts 44 and 45 (Figure 10) are secured together by bolts46 and 47 and, accordingly, they function as one piece, but must be madein two pieces for assembly. The part 44 vis a combination handle and'door pull fitting ush Within the generally cylindricalv escutcheon 22and having a partially cylindrical sleeve 48 extending from one surfacethereof. The sleeve 48 has tapped holes within which the bolts 46 and 47are secured, the bolts being passed through aligned holes V hole 57 titsbetween confronting surfaces of the handle i y Patented Feb. 2,

is a perspective view of the otherl 4 4 and the part 45, which is in theform of a collar which :tits around the outer surface of sleeve 48 andwhich has a cylindrical key 59 at one end. Shoulders 60 and 61 onopposite4 sides of a slot 62 in part 45 bear against the tongue oranchor 63 of the lock 12.y

Notch 66, isformed in escutcheon. 22 and is in registry with the hole57. This is a locking notch which cooperates with the locking element70. Element 70 has two spindles 71 and 72 protruding from opposite sidesof a body 73 whose upper edge has a cam surface 74 thereon. Cylindricalkey 59 (Figures 7 and l0) has recess 75 in which the body 73 of thelocking element 'Z0y is accommodated. Spindle 72 is slidable in bore 76in key S9 (Figure 7) and is spring-pressed outwardly by spring 77 whichseats in bore 76. Spindle 71 is engageable in opening 78 that is formedin the backV side of part 44 (Figure 10)k and is operable within arecess 79 formed in part 44 and aroundA opening 78. Whenin the positionshown in Figure 7, the locking element 70 couples handle part 44 withcollar 4S and4 has its body '73 located in the notch 66, preventinghandle 4 4 fromr rotating because it is coupled to escutcheon 22 bylocking element 70. This, then, retains the door inV a locked positionso that the same cannot be opened from one side thereof. In order torelease the locked condition ofthe handle part 44, the ush mounted knobor button 80, which is rotatable in recess 89 formed in part 44, isrevolved. The iiush mounted button 80 has a plug, 81' integral with onesurface thereof, the latter having a slot enlarged S2 therein. This slotreceives. the tang 83 of lock 12, and is loosely fitted in slot 82'y toprovide a lost motion connection therewith, and upon rotation thereof,the lock 12 is actuated. However,.to release the element 70 from itsposition wherein the. handle part 44 cannot rotate, there is a cup 86connected, as by bolts 87 and 88 to the back surface ofA the, plug 81'.This plug 81' tits in a recess 89 that is formed in the center of handlepart 44, while the cup 86' has its back wall fitting on a shoulder 90formed in the handle part 44 and rotatable thereon. Bolts 87 and 88lhold the cup 86 and the rotary button 80 assembled with: the handle part44. Cam surface 92 is formed in the wall. of cup 86 and has a shallowland 9,3 and a deep land 9.4. Cam surface 74 is movable over the camsurface 92, and when locking element 70 has its surface. 74 on deep land94, the lock mechanism is in the locked condition, but when element 70is moved to position surface 74 on shallow land 93, the lock mechanismis` inthe unlocked condition. Therefore, when the button 80 is rotated,cam surface 92 pushes the locking element` 70 against the bias of spring77 and thek body out of the notch 66. When so moved, handle part 44 and;collar 45 which is bolted to it may both rotate in unison with respectto the escutcheon 22.

Handle 100 (Figure 11) Yis so dimensioned as to` lit Within theescutcheon 20 and be flush therewith. The` handle has a central opening101 through which the pin. or wafer tumbler lock 12 passes, with the keyhole part exposed for reception of Va key. There is a sleeve 105 on theback side of handle 100, the sleeve passing through central opening 106in escutcheon 20 and a corresponding opening 108 in the back wall 32 oflock casing 24. The escutcheon 20 has an enlarged notch 107 registeringwith opening 106 to permit the anchor 63 to. rotate a limited amounttherein. Parts 110. and 112 are connected by bolts 113 and 114 togetheras a unit, with a shoulder 116 on the part 110 bearing against the.inside surface of back wall 32 of lockcasing 24V in order to hold thethree parts 100, 110 and 112 assembled around they cylinder of the lock12. Shoulder 116. nests over sleeve 10S and the, part 112. is generallycylindrical With an inwardly directed, intermediate, transverse rib 120which fits between the confronting surfaces of parts 116 and 45. Anapproximately annular shoulder 122 is on part 116. in` order tonestwithin. the part 112,

while the annulus 124 of part 45 also nests within the part 11'2 but onthe other side of rib 120. Recesses 126 and 127 have key 59 nestedtherein, and there are slots 128, 129 and 130 that are aligned and thatare in parts 100, and 112 respectively, these slots being lined up withsimilar slots in the back wall 32 and the escutcheon 20. As shown inFigure 7, lock 12 has its anchor 63 fitted in slots. 129, 130 and 62.When lock 12 has the key fitted in it and turned to the lock position,the cup 86 moves the locking element 70 in such position that nointerior partsy of the lock are capable of rotating withl respect toescutcheon 22. But, when the key is turned to the opposite position, thelocking element is separated from engagement with the notch 66 ofescutcheon 22 and either handle 44 or 100 is capable of being rotated,and in each instance the part 112 is rotated therewith.

Part 112 constitutes a bolt actuating member. Bolt 14 isv fitted insleeve 140 and has a bill 141 at one end thereof. The opposite end has ahook 142 which tits over tube 30 when assembled (Figure 5), and there isa pivot pin 144 which passes through a hole 146 in the bolt 14 andthrough a bore 148 in the body 150. The body isinserted in sleeve 140after assembly of the bolt 114 therewith, the latter tting in recess 153in body 150. The recess opens upwardly to expose spring which seats inhole 162 formed in the top part of bolt 14. Spring 160 also seatsagainst the top surface of sleeve 140, thereby constantly applying adownward spring bias on the bolt 14. There are side iiats 164 on thebody 150 which cooperate with the fiat surfaces 165 in sleeve 140,thereby preventing the bodyA and the bolt from rotating with respect tothe sleeve 140. Aligned holes 167 and 169 in thev atsurfaces 164 of body150 are arranged to have the tube 30 assembled therewith, leavingexposed the hammer 170 on bolt 14. There is a shoulder 173` on thel boltactuating member or part 112 which contacts hammer 170 and pivots thelatch 14, thereby operating it against the opposing bias of spring 160.In order to return the actuating member 112 after it has been placed touse for actuating bolt 14, spring 178 is attached to a post 179 at oneend and carried by the bolt actuating member 112 and is hooked over tube31.

Escutcheon 19,0 is preferably mortised in the edge of door 10 and has abeveled opening 191 therein through which the keeper 193 is adapted topass. Escutcheon has holes to accommodate screws and has a shim 194'behind it, this shim also being apertured. Keeper 193 is of standardconstruction and is mounted on a keeper plate 19S which mayl be attachedby screws oli other fasteners to the door jamb 19S or some otherstationary part with which the door is operatively connected;

The foregoingl is considered as illustrative only of the principles of4the invention. Further, since numerous modifications and changes willreadily occur to those skilled inthe art, it is not desired to limit theinvention to the exact construction and operation shown and described,and accordingly all suitable modifications and equivalents may beresorted to, falling within the scope of the invention as claimed.

What is claimed as new is as follows: l

1. In a sliding door that has a circular passage extending throughbothof itsl surfaces and a bore opening through one edge of the door andinto said passage, a door latch and lock mechanism comprising a casingin said passage,- escutcheons having aligned apertures and recessedwithin said passage, a handle recessed in each escutcheon, a part ofeach handle being mounted for oscillation in said apertures of saidescutcheons said handles having central openings, a tumbler lock in saidcentral openings, said casing having an opening, a'bolt pivotallymounted. in saidbore and extending through said casing opening,mechanical means drivingly connesting said handles, to said, bolt, toactuate the latter,

means including a locking element to couple said mechanical means to oneescutcheon and thereby prevent said handles from moving, a lockingelement actuating part and return spring to activate said lockingelement to and from engagement with said one escutcheon, and saidtumbler lock operatively connected with said actuating part.

2. In a sliding door that has a passage extending through both of itssurfaces and a bore opening through one edge of the door and into saidpassage, a door latch and lock mechanism comprising a casing in saidpassage, escutcheons having aligned apertures and recessed within saidpassage, a handle recessed in each escutcheon, a part of each handlebeing mounted for oscillation in said apertures of said escutcheons,said handles having central openings, a tumbler lock in said centralopenings, said casing having an opening, a bolt pivotally mounted insaid bore and extending through said casing opening, mechanical meansdrivingly connecting said handles to said bolt to actuate the latter,means including a locking element to couple said mechanical means to oneescutcheon and thereby prevent said handles from moving, a lockingelement actuating part and return spring to activate said lockingelement to and from engagement with said one escutcheon, said tumblerlock operatively connected with said actuating part and having a keyholeaccessible from one side of the door, and a manual operator connected tosaid actuating part and accessible from one side of said door andassociated with the handle on that side of the door.

3. The door latch of claim 1 wherein said mechanical means include aspring returned member having a part in contact with said bolt, a tubein said bore, and said bolt being pivoted to said tube.

4. The sliding door latch and lock mechanism of claim 2 wherein saidlocking element actuating part includes a cam mounted in the aperture ofone of said escutcheons, said manual operator attached to 'said cam tooperate said cam in response to movement of said manual operator, saidtumbler lock having a tang, said manual operator having a slot and saidtang disposed in said slot.

5. The sliding door latch and lock mechanism of claim 2 wherein saidlocking element actuating part includes a cam mounted in the aperture ofone of said escutcheons, said manual yoperator attached to said cam tooperate said cam in response to movement of said manual operator, saidtumbler lock having a tang, said manual operator having a slot and saidtang disposed in said slot, said mechanical means including a springactuated member having a part in contact with said bolt, and meansdisplaceably mounting said bolt in said bore.

References Cited in the le of this patent UNITED STATES PATENTS1,829,815 schlage Non 3, 1931 2,226,499 Ledin Dec. 24, 1940 2,666,319Price Jan. 19, 1954 2,744,406 Labrie May 8, 1956 FOREIGN PATENTS 821,320Germany Nov. l5, 1951

